Table 2.

Specific activity of wild-type and mutant PsXRs in this study.

	Specific activity [U·mg-1]
Enzymes	NADH	NADPH	NADH-/NADPH-linked activity ratio
XR	16.7[a]	23.2[a]	0.72
Wild-type NT-XR	18.9 ± 1.3	44.1 ± 2.4	0.43
1-2F7	10.4 ± 0.4	10.8 ± 1.3	0.96
2-2C12	20.6 ± 2.3	0.82 ± 0.16	25.2
NT-K270R/N272D	19.3 ± 1.4	18.1 ± 1.7	1.07

[a] Data were quoted from C. V. K. Verduyn et al [32].